Optical fiber cable manufacturing equipment for long distance wiring, and traceable optical fiber cable manufactured thereby

ABSTRACT

The disclosure relates to optical fiber cable manufacturing equipment for long distance wiring, and a traceable optical fiber cable manufactured thereby, and more particularly, to optical fiber cable manufacturing equipment which makes it easy to trace a burying position, considering a maintenance and repair operation of a cable even when the cable is buried deeply, and a traceable optical fiber cable manufactured thereby.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of the Korean Patent Applications10-2022-0052210 filed on Apr. 27, 2022, in the Korean IntellectualProperty Office, the disclosure of which is incorporated herein byreference.

TECHNICAL FIELD

The disclosure relates to optical fiber cable manufacturing equipmentfor long distance wiring, and a traceable optical fiber cablemanufactured thereby, and more particularly, to optical fiber cablemanufacturing equipment for long distance wiring, which makes it easy totrace a burying position, considering a maintenance and repair operationof a cable even when the cable is buried deeply, and a traceable opticalfiber cable manufactured thereby.

BACKGROUND ART

An optical fiber cable has a structure including an optical fiber bundletherein and a central strength member, and typically, refers to a cableconfiguring a long-distance circuit, and is developing into a form of anelectrical cable established between countries or between a land and anisland, or into a form capable of communicating or supplying gas orwater.

When a long-distance cable is installed on the ground, a highinstallation cost may be required and a procedure for installing may becomplicated due to a problem of negotiation with landowners or betweenneighboring countries. Therefore, a method of burying a cable under theground is normally applied.

When a long-distance cable is damaged, serious inconvenience (in thecase of a communication cable, a computer network may be paralyzed.) maybe caused, and also, astronomical economic losses may be accompanied.There are many kinds of damage to the long-distance cable, and the mostrepresentative damage is an accident caused by breaking.

When an accident occurs by damage to a cable, it is important to find aburying position of the cable rapidly and exactly. However, there may bea problem that it is not easy to find a burying position of along-distance cable that has been once buried.

PRIOR ART LITERATURE Patent Literature

Korean Patent Laid-Open Publication No. 10-2011-0012705 (published onFeb. 9, 2011)

DETAILED DESCRIPTION OF THE PRESENT DISCLOSURE Technical Objects

The disclosure has been developed to solve the above-described problemsof the related-art technology, and aims at providing optical fiber cablemanufacturing equipment for long distance wiring, which makes it easy totrace a burying position, considering a maintenance and repair operationof a cable even when the cable is buried under the ground, and atraceable optical fiber cable manufactured thereby.

Technical Solving Means

To achieve the above-described object, the disclosure provides opticalfiber cable manufacturing equipment including a collective core portionincluding a plurality of optical fibers, a metal tape disposed outsidethe collective core portion, and a sheath portion disposed outside themetal tape, the optical fiber cable manufacturing equipment including: apre-bonding portion configured to pre-bond the metal tape to the outsideof the collective core portion; a first coating portion disposed behindthe pre-bonding portion to coat a first adhesive over at least part ofboth ends of the metal tape; a bonding portion disposed behind thepre-bonding portion to bond the metal tape to the outside of thecollective core portion with the both ends of the metal tape overlappingeach other; a second coating portion disposed behind the bonding portionto coat a second adhesive over the outside of the metal tape; a sheathfabrication portion disposed behind the second coating portion to coverthe collective core portion to which the metal tape is bonded, with asheath; and a cooling portion installed behind the sheath fabricationportion to cool the sheath portion, wherein an upper portion of thecollective core portion to which the metal tape is bonded is heatedbefore the collective core portion to which the metal tape is bondedenters the second coating portion, wherein the second adhesive is coatedonly over a lower portion of the collected core portion to which themetal tape is bonded in the second coating portion, wherein a meltingpoint of the first adhesive is higher than a melting point of the secondadhesive, wherein the cooling portion is formed in a shape of a watertank to cool the sheath portion in a water cooling method, and containsa coolant therein, and includes a drain valve to discharge the coolantand a coolant supply pipe to continuously supply the coolant, the drainvalve and the coolant supply pipe being connected to the coolingportion.

In addition, the optical fiber cable manufacturing equipment may furtherinclude a wire guide portion installed between the bonding portion andthe second coating portion to guide a tracing wire to a periphery of thecollective core portion to which the metal tape is bonded in parallelwith the collective core portion.

In addition, the wire guide portion may include: a main body which has acore passing hole penetrating through a center thereof to allow thecollective core portion to pass therethrough, and wire passing holespenetrating through an upper portion and a lower portion of the corepassing hole to allow the tracing wires to pass therethrough,respectively; and a third coating portion coupled to the main body tosupply a third adhesive to the wire passing hole and to coat the thirdadhesive over the tracing wire.

In addition, the second coating portion may include an adhesive supplyportion configured to supply the second adhesive, a frame, and a rollerportion rotatably disposed on the frame to come into contact with thecollective core portion to which the metal tape is bonded. The rollerportion may include a recess which is in contact with the collectivecore portion to which the metal tape is bonded. Only a lower portion ofthe collective core portion to which the metal tape is bonded may bereceived in the recess. The adhesive supply portion may supply thesecond adhesive to the recess. The optical fiber cable manufacturingequipment may further include: a first heating portion configured tomelt the first adhesive supplied from the first coating portion; asecond heating portion configured to heat the roller portion of thesecond coating portion to melt the second adhesive; a third heatingportion disposed on the bonding portion to heat the collective coreportion to which the metal tape is bonded; and a fourth heating portiondisposed behind the bonding portion to heat an upper side of thecollective core portion to which the metal tape is bonded. The bondingportion may include a first bonding portion and a second bonding portionwhich is disposed behind the first bonding portion and spaced aparttherefrom. The fourth heating portion may heat the collective coreportion to which the metal tape is bonded, escaping from the firstbonding portion. The optical fiber cable manufacturing equipment mayfurther include a heat loss prevention cover disposed across the firstbonding portion and the second bonding portion, and disposed above thecollective core portion to which the metal tape is bonded. The rollerportion may include a hub including a plurality of arms to be rotatablycoupled to the frame, and rollers rotatably coupled to the plurality ofarms, respectively,

In addition, there is provided a traceable optical fiber cablemanufactured by the optical fiber cable manufacturing equipment for longdistance wiring, the traceable optical fiber cable including: acollective core portion; a metal tape bonded to an outside of thecollective core portion; one pair of tracing wires disposed on an upperportion and a lower portion of the collective core portion to which themetal tape is bonded, respectively; and a sheath portion covering theone pair of tracing wires and the metal tape, simultaneously.

Advantageous Effects

The disclosure provides effects that a sheath stripping operation for anintermediate branch or end connecting operation is easily performed inthe field, and a burying position of an optical fiber cable is easilytraced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1(a) and FIG. 1(b) are a view conceptually illustrating across-sectional configuration of a traceable optical fiber cableaccording to the disclosure;

FIG. 2 is a view illustrating optical fiber cable manufacturingequipment according to an embodiment;

FIG. 3 is a perspective view illustrating a second coating portion;

FIG. 4 is a view schematically illustrating a front surface of a rollerportion shown in FIG. 3 ;

FIG. 5 is a view provided to explain a variation of the roller portion,and illustrating one side surface of the roller portion;

FIG. 6 is a view schematically illustrating a plane of the rollerportion shown in FIG. 5 ; and

FIG. 7 is a view illustrating a cooling portion.

BEST MODE FOR EMBODYING THE INVENTION

Objects, specific advantages, and new features of the disclosure will bemore apparent from detailed descriptions associated with theaccompanying drawings and preferred embodiments. In addition, the termsor words used in the specification and the claims should not beinterpreted as being limited to ordinary or lexical meanings, and shouldbe interpreted as having meanings and concepts conforming to thetechnical concept of the disclosure, based on the principle that aninventor can appropriately define a concept of a term in order toexplain his/her invention in the best way. In the description of thedisclosure, detailed explanations of well-known technology of relatedart are omitted when it is deemed that they may unnecessarily obscurethe essence of the disclosure.

In explaining optical fiber cable manufacturing equipment according toan embodiment, when an element is referred to as being formed ordisposed “on,” “over,” or “above” or “under” or “below” another element,the two elements may be disposed in contact with each other or there maybe one or more other intervening elements formed or disposed between thetwo elements. The expressions “on,” “over,” or “above” or “under” or“below” may refer to an upward direction or a downward direction withreference to one element.

In addition, such terms as first, second may be used to simplydistinguish a corresponding element from another, and do not limit theelements in other aspects such as importance or order.

FIG. 1 is a view illustrating optical fiber cable manufacturingequipment according to an embodiment. In FIG. 1 , a direction from theleft to the right on the drawing is an advancing direction of amanufacturing process of an optical fiber cable. Hereinafter, “in frontof,” “behind” are defined with reference to the advancing direction ofthe manufacturing process of the optical fiber cable.

Referring to FIG. 2 , the optical fiber cable manufacturing equipmentaccording to an embodiment may include a pre-bonding portion 100, abonding portion 200, a first coating portion 500, a second coatingportion 300, a sheath fabrication portion 400, a cooling portion T, anda wire guide portion 700.

With reference to the advancing direction of the manufacturing processof the optical fiber cable, the pre-bonding portion 100, the firstcoating portion 500, the bonding portion 200, the wire guide portion700, the second coating portion 300, the sheath fabrication portion 400,and the cooling portion T may be disposed in sequence.

A collective core portion 11 a and a metal tape 11 b may be supplied tothe pre-bonding portion 100 all together. The collective core portion 11a may include a loose tube including an optical fiber therein, and acentral strength member. The metal tape 11 b is a member that enclosesthe collective core portion 11 a, and prevents foreign substances fromentering the inside of the collective core portion 11 a and preventsdeformation of the optical fiber cable.

The metal tape 11 b is supplied to the pre-bonding portion 100 in a flatstate. The pre-bonding portion 100 rolls the metal tape 11 b andpre-bonds the metal tape 11 b to the collective core portion 11 a to letthe metal tape 11 b enclose the collective core portion 11 a. Thecollective core portion 11 a passing through the pre-bonding portion 100is enclosed by the metal tape 11 b, and both ends of the metal tape 11 bare left in an open state.

The first coating portion 500 is disposed behind the pre-bonding portion100. The first coating portion 500 coats the metal tape 11 b pre-bondedto the collective core portion 11 a with a first adhesive M1 (forexample, any one of hot melt adhesives (polyamide, polyester,polyurethane, ethylene vinyl acetate (EVA) adhesives, or the like)). Thefirst coating portion 500 may coat the first adhesive M1 over at leastone of the both ends of the metal tape 11 b that are in the open state.A nozzle of the first coating portion 500 is disposed adjacent to theend of the metal tape 11 b. When the collective core portion 11 aincluding the metal tape 11 b pre-bonded thereto moves backward, acoating area of the first adhesive M1 is continuously formed from theend of the metal tape 11 b along a transfer direction.

In order to melt the first adhesive M1, a first heating portion 750 maybe provided. The first heating portion 750 may melt the first adhesiveM1 by directly heating the nozzle of the first coating portion 500. Amelting point of the first adhesive M1 may be within a range from 150°to 180°, for example, and may be higher than a melting point of a secondadhesive M2 (for example, within a range from 130° to 170°) coated bythe second coating portion 300, so that the first adhesive M1 bonds themetal tape 11 b to the collective core portion 11 a more strongly than asheath portion 12.

The collective core portion 11 a enters the bonding portion 200 with theboth ends of the metal tape 11 b being in the open state and the firstadhesive M1 being coated over the both ends.

The bonding portion 200 is disposed behind the first coating portion 500to bond the metal tape 11 b to an outside of the collective core portion11 a with the both ends of the metal tape 11 b overlapping each other.

The bonding portion 200 may include a first bonding portion 210 and asecond bonding portion 220. The second bonding portion 220 is disposedbehind the first bonding portion 210 and spaced apart therefrom. Themetal tape 11 b is primarily bonded to the collective core portion 11 ain the first bonding portion 210. The collective core portion 11 a towhich the metal tape 11 b is bonded through the first bonding portion210 may be directly heated through a third heating portion 800.

The third heating portion 800 may serve to completely melt the firstadhesive M1 which goes through the first bonding portion 210 but is notstill melted, by heating the collective core potion 11 to which themetal tape is bonded.

The collective core portion 11 to which the metal tape 11 b is bonded,heated by the third heating portion 800, enters the second bondingportion 220. In the second bonding portion 220, the metal tape 11 b isbonded to the collective core portion 11 a again.

The collective core portion 11 to which the metal tape 11 b is bonded,passing through the second bonding portion 220, is heated through afourth heating portion 900. The fourth heating portion 900 may bedisposed behind the second bonding portion 220 to heat an upper side ofthe collective core portion 11 to which the metal tape 11 b is bonded.This is to prevent the second adhesive M2 to be coated in the secondcoating portion 300 from being coated over the upper side of thecollective core portion 11 to which the metal tape 11 b is bonded. Whenthe upper side of the collective core portion 11 to which the metal tape11 b is bonded is heated and its temperature increases, the secondadhesive M2 may flow down without adhering. Therefore, the secondadhesive M2 is prevented from excessively sticking to the upper side ofthe collective core portion 11 to which the metal tape 11 b is bonded.

The bonding portion 200 may include a heat loss prevention cover 230.The heat loss prevention cover 230 may be disposed across the firstbonding portion 210 and the second bonding portion 220, and may bedisposed above the collective core portion 11 to which the metal tape 11b is bonded to prevent heat of the first heating portion 750 from beinglost to the outside.

The wire guide portion 700 is installed between the bonding portion 200and the second coating portion 300, and serves to guide supply of atracing wire 13 to a periphery of the collective core portion 11 towhich the metal tape 11 b is bonded in parallel with the collective coreportion 11.

In this case, the tracing wire 13 may use a copper wire that is easy todetect by a metal detector, and may be continuously supplied to the wireguide portion 700 through a separate wire supply unit (not shown).

One pair of tracing wires 13 may be provided on an upper portion and alower portion of the collective core portion 11, and may move inparallel with the collective core portion 11, and may be integrallycovered with the collective core portion 11 by the sheath portion 12 inthe sheath fabrication portion 400, which will be described below.

The wire guide portion 700 may include, for example, a main body 710which has a core passing hole 711 penetrating through a center thereofto allow the collective core portion 11 to pass therethrough, and wirepassing holes 712 formed on an upper portion and a lower portion of thecore passing hole 711, respectively, to allow the tracing wires 13 topass therethrough, and a third coating portion 720 which is coupled tothe main body 710 to supply a third adhesive M3 to the wire passing hole712 and to coat the third adhesive M3 over the tracing wire 13.

The collective core portion 11 to which the metal tape 11 b is bonded inthe bonding portion 200 passes through the core passing hole 711 of themain body 710 forward and backward without resistance, whereas thetracing wire 13 supplied by the wire supply unit passes through the wirepassing hole 712, and moves with the third adhesive M3 being coated overa surface thereof.

The third coating portion 720 is configured to coat the third adhesiveM3 over the surface of the tracing wire 13, and the third adhesive M3serves to bond the tracing wire 13 and the sheath portion 12.

The third coating portion 720 is provided in the form of a nozzleconnected to the main body 710 and facing the wire passing hole 712, andaccordingly, when the tracing wire 13 passes through the wire passinghole 712 filled with the third adhesive M3, the third adhesive M3 isnaturally coated over the surface of the tracing wire 13.

The third coating portion 720 may be provided to continuously supply ahot melt adhesive to the wire passing hole 712, and a detaileddescription thereof is omitted.

The collective core portion 11 and the tracing wire 13 passing throughthe core passing hole 711 and the wire passing hole 712 of the main body710, respectively, move toward the second coating portion 300 inparallel with each other, and a separate adhesive is not coated over anouter surface of the metal tape 11 b of the collective core portion 11before the collective core portion 11 and the tracing wire 13 passthrough the second coating portion 300, and the third adhesive M3 isonly coated over the tracing wire 13.

The second coating portion 300 may be disposed behind the wire guideportion 700 to coat the second adhesive M2 (for example, hotmelt) overthe metal tape 11 b of the collective core portion 11 passing throughthe wire guide portion 700.

As shown in FIG. 3 , the second coating portion 300 is to coat thesecond adhesive M2 over the collective core portion 11 to which themetal tape 11 b is bonded. The second adhesive M2 bonds the collectivecore portion 11 to which the metal tape 11 b is bonded and the sheathportion 12.

That is, when the collective core portion 11 and the tracing wire 13pass through the second coating portion 300, the second adhesive M2 iscoated over the collective core portion 11 with the third adhesive M3being coated over the tracing wire 13.

In this case, the second coating portion 300 may coat the secondadhesive M2 only over a lower side of the collective core portion 11 towhich the metal tape 11 b is bonded. That is, by coating the secondadhesive M2 only over a half area of the collective core portion 11 towhich the metal tape 11 b is bonded, adhesion between the collectivecore portion 11 to which the metal tape 11 b is bonded and the sheathportion 12 is guaranteed, and also, the sheath portion 12 is induced tobe easily stripped from the collective core portion 11 to which themetal tape 11 b is bonded.

The second coating portion 300 may include an adhesive supply portion600 and a roller portion 310. The adhesive supply portion 600 mayinclude a nozzle 610 to discharge the second adhesive M2 and a positionadjustment portion to adjust a position of the nozzle 610. The nozzle610 may be disposed adjacent to the roller portion 310.

The first, second, third adhesives described above may use a hot melt(thermoplastic) adhesive although there is a difference in meltingpoints.

The position adjustment portion may include a horizontal shaft 621, avertical shaft 623, and a body 622. The body 622 may be coupled to thehorizontal shaft 621 to be movable along the horizontal shaft 621. Inaddition, the body 622 may be coupled to the vertical shaft 623 to bemovable along the vertical shaft 623. When the body 622 moves, any oneof the horizontal shaft 621 and the vertical shaft 623 moves along withthe body 622.

A first bolt B1 may be disposed on one side of the body 622. The firstbolt B1 may be screwed into the body 622 to fix the body 622 to thehorizontal shaft 621. A second bolt B2 may be disposed on the other sideof the body 622. The second bolt B2 may be screwed into the body 622 tofix the body 622 to the vertical shaft 623.

In addition, the position adjustment portion may further include an armportion 624 coupled to the horizontal shaft 621. The arm portion 624connects the nozzle 610 and the horizontal shaft 621. The arm portion624 may be coupled to the horizontal shaft 621 to be rotatable about afirst axis C1. The arm portion 624 may have a curved shape.

The position adjustment portion described above may adjust the positionof the nozzle 610 in three-axis directions so as to align an end of thenozzle 610 with the roller portion 310.

The roller portion 310 may be rotatably coupled to a frame of the secondcoating portion 300. The roller portion 310 rotates due to a frictionbetween the roller portion 310 and the collective core portion 11 towhich the metal tape 11 b is bonded.

The roller portion 310 includes a recess 311. The lower side of thecollective core portion 11 to which the metal tape 11 b is bonded isreceived in the recess 311. A cross-sectional shape of the recess 311 isa “

”-like shape to form a space to receive the lower side of the collectivecore portion 11 to which the metal tape 11 b is bonded.

In this case, a passing recess 311′ may be recessed in the recess 311and extended to allow a tracing wire 13′, which moves under thecollective core portion 11 in parallel therewith, to pass therethrough,and accordingly, one pair of tracing wires 13, 13′ moving above andunder the collective core portion 11 in parallel therewith may passthrough the second coating portion 300 without interference in movement.

The second coating portion 300 supplies the second adhesive M2 to therecess 311. When the roller portion 310 is rotated with the secondadhesive M2 being received in the recess 311, the second adhesive M2 iscontinuously coated over the lower side of the collective core portion11 to which the metal tape is bonded, and the one pair of tracing wires13 may pass through the roller portion 310.

Through the roller portion 310, the second adhesive M2 is coated onlyover the lower side of the collective core portion 11 to which the metaltape 11 b is bonded, and the second adhesive M2 is not coated over theupper side of the collective core portion 11 to which the metal tape 11b is bonded. Accordingly, a structure that makes it easy to strip thesheath portion 12 is provided. In particular, since the upper side ofthe collective core portion 11 to which the metal tape 11 b is bonded isheated before entering the second coating portion 300 and itstemperature increases, the second adhesive M2 does not stick to theupper side of the collective core portion 11 to which the metal tape 11b is bonded, so that the sheath portion 12 may be easily stripped.

Since the lower side of the collective core portion 11 to which themetal tape 11 b is bonded is bonded to the sheath portion 12 through thesecond adhesive M2, sufficient adhesion between the collective coreportion 11 to which the metal tape 11 b is bonded and the sheath portion12 may be guaranteed.

A second heating portion 700 for heating the roller portion 310 may beincluded. The second heating portion 700 may heat the roller portion 310to melt the second adhesive M2 received in the recess 311. In this case,the melting point of the second adhesive M2 is lower than the meltingpoint of the first adhesive M1. This is to reduce adhesion between thesheath portion 12 and the collective core portion 11 to which the metaltape 11 b is bonded lower than adhesion between the metal tape 11 b andthe collective core portion 11 a, and to make the sheath portion 12 beeasily stripped.

FIGS. 5 and 6 are views illustrating another embodiment of the rollerportion 310, and referring to these drawings, the roller portion 310 mayinclude a hub 330 including a plurality of arms rotatably coupled to theframe 320, and rollers 310A, 310B, 310C rotatably coupled to the hub330.

When the hub 330 rotates, any one of the plurality of rollers 310A,310B, 310C selectively comes into contact with the collective coreportion 11 to which the metal tape 11 b is bonded. A user may check astate of the roller 310A, 310B, 310C and rotate the hub 330 to bring anew roller 310A, 310B, 310C into contact with the collective coreportion 11 to which the metal tape 11 b is bonded. Since a contaminatedroller may be directly replaced, a bonding portion between thecollective core portion 11 to which the metal tape 11 b is bonded andthe sheath portion 12 may be prevented from being contaminated.

In addition, the second coating portion 300 may include a supportportion 340 fixed to the frame 320, and a collection container 1000removably coupled to the support portion 340.

The collection container 1000 may include a body 1100 and a scraper 1200extended from the body 1100.

The body 1100 has a receiving space formed therein. In addition, thebody 110 may include a structure such as a recess, a hole, or a slot tobe coupled with the support portion 340. The scraper 1200 comes intocontact with any one of the plurality of rollers 310A, 310B, 310C thatis in contact with the collective core portion 11 to which the metaltape 11 b is bonded, and scrapes the second adhesive M2 remaining on theroller 310A or foreign substances and guides the scraped substances tothe collection container 1000. The second adhesive M2 or foreignsubstances remaining on the roller 310A are removed through thecollection container 1000, so that a bonding portion between thecollective core portion 11 to which the metal tape 11B is bonded and thesheath portion 12 is prevented from being contaminated.

When the collective core portion 11 and the tracing wire 13 coated withthe second adhesive M2 and the third adhesive M3, respectively, enterthe sheath fabrication portion 400, a predetermined sheath materialmelted in the sheath fabrication portion 400 covers the metal tape 11 bof the collective core portion 11 and the tracing wire 13 which aremoving in parallel with each other, simultaneously, such that anintegrated optical fiber cable may be injected while being drawn.

After the optical fiber cable is injected while being drawn, the opticalfiber cable enters the cooling portion T installed behind the sheathfabrication portion 400 and the sheath portion 12 is cooled.

The cooling portion T is formed in the shape of a water tank to cool thesheath portion 12 in a water cooling method, and contains a coolanttherein, and may include a drain valve T1 to discharge the coolant whichundergoes heat exchange by temperature of the sheath portion 12, and acoolant supply pipe T2 to continuously supply the coolant.

As shown in FIG. 1 , an optical fiber cable manufactured as describedabove is formed in a structure, including the collective core portion 11a forming the inside of the optical fiber cable, the metal tape 11 bbonded to the outside of the collective core portion 11 a to protect thecollective core portion 11 a primarily, one pair of tracing wires 13disposed on an upper portion and a lower portion of the collective coreportion 11 to which the metal tape 11 b is bonded, respectively, and thesheath portion 12 covering the one pair of tracing wires 13 and themetal tape 11 b simultaneously. Even when the optical fiber cable isburied deeply, a burying position may be easily traced through thetracing wire 13.

Up to now, one preferred embodiment of the disclosure has been describedin detail with reference to the accompanying drawings.

One embodiment of the disclosure described above should be understood asbeing merely an example in all aspects and not being limited, and thescope of the disclosure is defined not by the detailed descriptionsexplained above, but by the appended claims described below. Inaddition, it should be understood that not only the meaning and thescope of the claims but also all changes or changeable forms derivedfrom equivalent concepts thereto are included in the scope of thedisclosure.

Explanation of Sings

-   -   100: pre-bonding portion    -   200: bonding portion    -   210: first bonding portion    -   220: second bonding portion    -   230: heat loss prevention cover    -   300: second coating portion    -   310: roller portion    -   400: sheath fabrication portion    -   500: first coating portion    -   600: adhesive supply portion    -   700: second heating portion    -   750: first heating portion    -   800: third heating portion    -   900: fourth heating portion

What is claimed is:
 1. Optical fiber cable manufacturing equipment forlong distance wiring comprising a collective core portion comprising aplurality of optical fibers, a metal tape disposed outside thecollective core portion, and a sheath portion disposed outside the metaltape, the optical fiber cable manufacturing equipment comprising: apre-bonding portion configured to pre-bond the metal tape to the outsideof the collective core portion; a first coating portion disposed behindthe pre-bonding portion to coat a first adhesive over at least part ofboth ends of the metal tape; a bonding portion disposed behind thepre-bonding portion to bond the metal tape to the outside of thecollective core portion with the both ends of the metal tape overlappingeach other; a second coating portion disposed behind the bonding portionto coat a second adhesive over the outside of the metal tape; a sheathfabrication portion disposed behind the second coating portion to coverthe collective core portion to which the metal tape is bonded, with asheath; and a cooling portion installed behind the sheath fabricationportion to cool the sheath portion, wherein an upper portion of thecollective core portion to which the metal tape is bonded is heatedbefore the collective core portion to which the metal tape is bondedenters the second coating portion, wherein the second adhesive is coatedonly over a lower portion of the collected core portion to which themetal tape is bonded in the second coating portion, wherein a meltingpoint of the first adhesive is higher than a melting point of the secondadhesive, wherein the cooling portion is formed in a shape of a watertank to cool the sheath portion in a water cooling method, and containsa coolant therein, and comprises a drain valve to discharge the coolantand a coolant supply pipe to continuously supply the coolant, the drainvalve and the coolant supply pipe being connected to the coolingportion.
 2. The optical fiber cable manufacturing equipment of claim 1,further comprising a wire guide portion installed between the bondingportion and the second coating portion to guide a tracing wire to aperiphery of the collective core portion to which the metal tape isbonded in parallel with the collective core portion.
 3. The opticalfiber cable manufacturing equipment of claim 2, wherein the wire guideportion comprises: a main body which has a core passing hole penetratingthrough a center thereof to allow the collective core portion to passtherethrough, and wire passing holes penetrating through an upperportion and a lower portion of the core passing hole to allow thetracing wires to pass therethrough, respectively; and a third coatingportion coupled to the main body to supply a third adhesive to the wirepassing hole and to coat the third adhesive over the tracing wire. 4.The optical fiber cable manufacturing equipment of claim 3, wherein thesecond coating portion comprises an adhesive supply portion configuredto supply the second adhesive, a frame, and a roller portion rotatablydisposed on the frame to come into contact with the collective coreportion to which the metal tape is bonded, wherein the roller portioncomprises a recess which is in contact with the collective core portionto which the metal tape is bonded, wherein only a lower portion of thecollective core portion to which the metal tape is bonded is received inthe recess, wherein the adhesive supply portion is configured to supplythe second adhesive to the recess, wherein the optical fiber cablemanufacturing equipment further comprises: a first heating portionconfigured to melt the first adhesive supplied from the first coatingportion; a second heating portion configured to heat the roller portionof the second coating portion to melt the second adhesive; a thirdheating portion disposed on the bonding portion to heat the collectivecore portion to which the metal tape is bonded; and a fourth heatingportion disposed behind the bonding portion to heat an upper side of thecollective core portion to which the metal tape is bonded, wherein thebonding portion comprises a first bonding portion and a second bondingportion which is disposed behind the first bonding portion and spacedapart therefrom, wherein the fourth heating portion is configured toheat the collective core portion to which the metal tape is bonded,escaping from the first bonding portion, and wherein the optical fibercable manufacturing equipment further comprises a heat loss preventioncover disposed across the first bonding portion and the second bondingportion, and disposed above the collective core portion to which themetal tape is bonded.
 5. A traceable optical fiber cable manufactured bythe optical fiber cable manufacturing equipment for long distance wiringof claim 4, the traceable optical fiber cable comprising: a collectivecore portion; a metal tape bonded to an outside of the collective coreportion; one pair of tracing wires disposed on an upper portion and alower portion of the collective core portion to which the metal tape isbonded, respectively; and a sheath portion covering the one pair oftracing wires and the metal tape, simultaneously.